Paint brush



FIG. 1 is a front view of the paint brush of the present invention;

FIG. 2 is a back view of the paint brush of FIG. 1;

FIG. 3 is a left side view of the paint brush of FIG. 1;

FIG. 4 is a right side view of the paint brush of FIG. 1;

FIG. 5 is a top plan view of the paint brush of FIG. 1; and,

FIG. 6 is a bottom plan view of the paint brush of FIG. 1.

The ornamental design for a paint brush, as shown.